Console Commands
In the overworld map (not during battles), press the Console key ([Backspace] by default) and type one of the commands as listed. Then press [Enter]. If the code includes (firstname), replace the whole parenthesis with the first name of the character you want the code to affect. If the code contains (ItemName), replace the parenthesis with the name of the item as shown in your inventory, capitalised exactly the same way, but with NO SPACES. If the code contains a #, replace it with whatever number you want.

Achievements (Steam)
A Friend In Need - Save Governor Bernardo De Manzanedo.
A Sorry Bunch - Have all your followers be disabled at the same time.
A-Team - Enter combat with six units at Veteran or higher rank.
Aguirre - Complete the game on Insane difficulty.
Ambassador - Resolve the Jungle Drums goal without bloodshed.
Don Quijote - Complete 5 side quests in Hispaniola.
El Loco - Attack and destroy a native settlement on Hispaniola.
Fall Of The Empire - Kill Moctezuma Xocoyotzin.
Feminist - Start the game with only women, as a female character.
Fleet-footed - Achieve a Flawless Victory in an Escape battle.
Harsh Rationing - Make camp without giving any of your followers food.
Historian - Unlock all the Codex entries.
Hogar Dulce Hogar - Rebuild Fortaleza De Gutiérrez.
Infected Mushroom - Complete The Gloaming.
Juggernaut - Enter combat with at least 25 points of Equipment assigned to a single unit.
Keep Your Distance - Win a non-tutorial battle without ever getting within melee distance of an enemy.
La Noche Triste - Kick off the battle for Tenochtitlan.
Magnetic Personality - Recruit all 10 special followers in a single playthrough.
Masochist - Complete the game in Iron Man mode on any difficulty.
Merchant - Trade at every market in both campaigns in a single playthrough.
Mestizo - Recruit Isabela de Yruenes for your expedition.
No Man Left Behind - Return to Spain without losing any expedition members.
Number One - Promote a follower to Lieutenant.
Of Pens And Swords - Win a non-tutorial battle with only Scholars and Doctors.
Onwards To Glory - Cast off for the mainland!.
Among The Prickly Pears - Discover Tenochtitlan.
Apocalypto - Aid the escaped slaves.
Artisan - Fully research all the possible inventions and construct one item of every possible recipe.
Building Bridges - Marry a native.
Cannon Fodder - Kill an enemy unit with a cannon blast.
Cartographer - Find all cairns on Hispaniola and compile all the maps of the island.
Champion - Win all three battles in the Tournament.
Close Call - Revive an incapacitated unit and keep that unit alive until the end of the battle.
Collateral Damage - Hit one of your own units with AoE damage.
Conquistador - Turn against your allies in their hour of triumph.
Cortés - Complete the game on Normal difficulty.
Defying History - Save Moctezuma Xocoyotzin.
Diplomatic Asset - Recruit Anacaona for your expedition.
Don Juan - Form a romantic relationship.
Running The Gauntlet - Kill an enemy with an Interrupt attack.
Skull Crusher - Deal more than 100 points of damage with a single attack.
Stronghold - Restore Fortaleza De Gutiérrez to its full glory.
Pizarro - Complete the game on Hard difficulty.
Pot Shot - Score a hit with a ranged attack with a 5% hit chance.
Raider Of The Lost Temple - Complete The Temple of Death.
Surrounded - Kill an enemy with a flanking strike.
Tactician - Achieve fifteen Flawless Victories in a row on Normal or greater difficulty.
Tame The Beast - Capture Xochiyohua.
The Beginning Of The End - Inadvertently unleash smallpox on the population of Tenochtitlan.
The Bigger They Are - Defeat Esteban Gallego.
The Greater Good - Sacrifice a member of your expedition.
The Waters Of Rejuvenation - Discover the Fountain Of Youth.
The Wrath Of God - Experience a mutiny.
Treading New Ground - Find all the cairns and compile all the maps of Mexico.
The Boot - Kick an enemy into a burning or trapped space.
The City Of Gold - Discover El Dorado.
The Dog-Headed God - Discover the Masaya Volcano tunnels.
The Ecstasy Of Gold - Return to Spain with 50,000 Valuables or more.
Triage Hero - Nurse a Fatally Injured expedition member back to full health.
Wake-Up Call - Lose the first tutorial battle.